Plastic can



FIG. 1 is a perspective view of a plastic can, showing my new design;

FIG. 2 is a front elevational view thereof, the rear, left and right side elevational views being the same; and,

FIG. 3 is a top plan view thereof.

All sides not shown form no part of the claimed design.

The broken lines in the drawings depict probable environment only and form no part of the claimed design. 

The ornamental design for a plastic can, as shown and described. 